3 Groove Blower Pulley's?

Have this question on another thread but instead of hijacking it I will post it here.
Info needed, I have a 2" blower belt, the blower gear & crank gear are 2 1/4", idler is 2 1/8", with those width figures is there enough width to whittle a new 3 groove pulley? Nother words whats the least width it takes to make/have a 3 groove pulley? I know it would have something to do with what belts you run. Thanks <!-- / message --><!-- sig -->

 

top pulley on Cragar 3 belt drive

lower pulley has about 1/8" seperation between the three drive belts and the fourth (water pump/generator) belt

 

Paul, thanks, what's the belt pt. numbers?
Looks like you have everything in an 1 1/2"

 

Check this out! Yea Walden!

(I had to use my daughters Facebook to look at the pictures, but these are awesome.)

http://www.facebook.com/media/set/?set=a.178665742208147.43960.100001941660198

 

here's the belt numbers on the set I'm running, your's of course will need to be fit to your application
you can just see the run numbers in red, these need to be from the same run and as close to sequential as possible

I bought this set at Williams Oil Filter on Puyallup Ave. in Tacoma

also a shot of the lower pulley, you need some seperation between the drive and accessory pullies

 

All great info, thanks again Paul!
Bonesy, interesting stuff coming out of that shop!

 

You might want to try an industrial power transmission place for belts, rather than an automotive supplier. They can usually supply matched sets of belts for compressors, pumps, etc. Automotive belts of the same part number are not necessarily exactly the same length, resulting in the shortest belt carrying most of the load.

 

You can also buy bonded or married belts that have another strip of rubber covering all 3 belts.We used to run them as drive belts for hyd.

 

Is that every part to build a functioning Cragar blower drive? What year was this style drive originally offered? Have you been in contact with them and heard prices?